Alarm Systems
2 devicesCellular alarm system boards for remote security alerting.

LILYGO T-SIM A7670E
ESP32
ESP32-WROVER-E development board with A7670E LTE Cat-1 modem supporting voice calls, SMS, and GPS positioning. Available with multiple regional frequency variants for global 4G deployments.
ESP32-WROVER-E520 KB4MBWiFi 802.11 b/g/nBLE BLE 4.2
~$30View

LILYGO T-A7608E-H
ESP32
ESP32-WROVER-E development board with A7608E-H LTE Cat-1 modem supporting voice, SMS, GPS, and multi-band LTE-FDD/TDD connectivity for Europe with 18650 battery support.
ESP32-WROVER-E520 KB4MBWiFi 802.11 b/g/nBLE BLE 4.2
~$35View
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